Skylights + Bleach, Any Problems??

I've got a roof coming up with skylights and was wondering if anyone knows of any problems or damage I could cause with the skylights. I'm using a chlorine and tsp mix and didn't know if it would cause damage to the metal (rusting) or rubber (I don't even know if there is rubber on the outside). Also, the glass. Any input?

I have cleaned roofs that had skylights and I walk all my roofs. The home owner normally request that while I am on the roof to clean their skylights for them. All the ones I have clean have been a plastic type cover and not real glass. I always use a spray bottle with windex and a bottle of Chlorine if their is alot of mold on the skylight. I would not even try to clean them from the ground. Of course this is only my way of doing things. Good luck Hugh